Adding script to upload master to github release.

build/masterRelease/main.go

@@ -0,0 +1,97 @@
+package main
+
+import (
+	"context"
+	"log"
+	"os"
+	"strings"
+
+	"fmt"
+	"time"
+
+	"github.com/google/go-github/github"
+	"golang.org/x/oauth2"
+)
+
+const (
+	owner = "StackExchange"
+	repo  = "dnscontrol"
+	tag   = "latest"
+)
+
+func check(err error) {
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+var bg = context.Background
+
+var files = []string{"dnscontrol.exe", "dnscontrol-Linux", "dnscontrol-Darwin"}
+
+func main() {
+
+	tok := os.Getenv("GITHUB_ACCESS_TOKEN")
+	if tok == "" {
+		log.Fatal("$GITHUB_ACCESS_TOKEN required")
+	}
+	c := github.NewClient(oauth2.NewClient(bg(), oauth2.StaticTokenSource(&oauth2.Token{AccessToken: tok})))
+
+	log.Println("Getting release info")
+	rel, _, err := c.Repositories.GetReleaseByTag(bg(), owner, repo, tag)
+	check(err)
+
+	for _, f := range files {
+		log.Printf("--- %s", f)
+
+		var found *github.ReleaseAsset
+		var foundOld *github.ReleaseAsset
+		for _, ass := range rel.Assets {
+			if ass.GetName() == f {
+				found = &ass
+			}
+			if ass.GetName()+".old" == f {
+				foundOld = &ass
+			}
+		}
+		if foundOld != nil {
+			log.Fatalf("%s.old was already found. Previous deploy likely failed. Please check and manually delete.", f)
+		}
+		if found != nil {
+			n := found.GetName() + ".old"
+			found.Name = &n
+			log.Println("Renaming old asset")
+			_, _, err = c.Repositories.EditReleaseAsset(bg(), owner, repo, found.GetID(), found)
+			check(err)
+		}
+
+		log.Println("Uploading new file")
+		upOpts := &github.UploadOptions{}
+		upOpts.Name = f
+		f, err := os.Open(f)
+		check(err)
+		_, _, err = c.Repositories.UploadReleaseAsset(bg(), owner, repo, rel.GetID(), upOpts, f)
+		check(err)
+
+		if found != nil {
+			log.Println("Deleting old asset")
+			_, err = c.Repositories.DeleteReleaseAsset(bg(), owner, repo, found.GetID())
+			check(err)
+		}
+	}
+
+	log.Println("Editing release body")
+	body := strings.TrimSpace(rel.GetBody())
+	lines := strings.Split(body, "\n")
+	last := lines[len(lines)-1]
+	if !strings.HasPrefix(last, "Last updated:") {
+		log.Fatal("Release body is not what I expected. Abort!")
+	}
+	last = fmt.Sprintf("Last updated: %s", time.Now().Format("Mon Jan 2 2006 @15:04 MST"))
+	lines[len(lines)-1] = last
+	body = strings.Join(lines, "\n")
+	rel.Body = &body
+	c.Repositories.EditRelease(bg(), owner, repo, rel.GetID(), rel)
+
+	log.Println("DONE")
+}